The core of namenode functionality happens in single thread because of a global lock, unfortunately. The other cpus would still be used to some extent by network IO and other threads. Usually we don't see just one cpu at 100% and nothing else on the other cpus.
What kind of load do you have? Raghu. Dmitry Pushkarev wrote:
Hi.My namenode runs on a 8-core server with lots of RAM, but it only uses one core (100%). Is it possible to tell namenode to use all available cores?Thanks.
